Nut-lock



A. C. VAUGHAN.

NUT LOCK No. 423,193. Patented Mar. 11, 1890.

UNITED STATES PATENT OFFICE.

AARON C. VAUGHAN, OF SHANES CROSSING, OHIO.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 423,193, dated March 1l, 1890,

Application iiled June 21, 1889.' Serial No. 315,085. (No model.)

T0 all whom it may concern.-

Be it known that I, AARON O. VAUGHAN, of Shanes Crossing, in the county of Mercer and State of Ohio, have invented a new and useful Improvement in NutLocks, of which the following is a specication.

My invention is in the nature of an improvement in nut-locks of that form which is constructed as a screw-threaded metal plate adapted to be applied to the bolt outside the nut and to pinch the bolt so as to not only hold itself on, but also secure the nut.

My invention consists ot a plate having a bolt-hole provided with oppositely-threaded sections, with the metal cut away between these sections, and having upturned wings lying tangential to the threaded parts of the bolt-hole, and also threaded upon their sides, which wings serve to pinch the bolt and lock the nut thereon by a spring action, as hereinafter fully described.

Figure 1 is a side elevation or edge view of the nut-lock. Fig. 2 is a plan view. Fig. 3 is a section of the same applied to a nut and bolt, and Figs. et to 9 arev modifications.

The nut-lock is made from a plate of thin steel or iron from three-sixteenths to threeeighths of an inch thick. It is provided with a bolt-hole of peculiar shape, as shown in Fig. 2, of which bolt-hole the two oppositelylying sections c c are parts of the circle of the bolt and are screw-threaded, while the intermediate parts are cut away by the punch to the depth of the thread, leaving the comparatively small spring-bars?) b. The ends of the plate are turned up at about right angles to form the win gs ct a, which lie tangential to the threaded portions c of the bolthole, and these wings are screw-threaded upon their inner faces and embrace the bolt.

In punching the bolt-hole it is punched of the shape shown, and in the same operation the wings a a are bent up. Then in another operation the sections c c and the inner walls of wings a a are successively threaded in a single operation. The nut-lock, it will be seen, is thus reduced to a very small cost, as it possesses a minimum amount of metal and is completed in two operations.

When the win gs a o, are bent up, they may be, and preferably are, slightly canted in to ward each other, as in Fig@ 5; and in tapping the thread in the same the wings are ex panded by the tap to the position indicated by the dotted lines in Fig. l, sothat when the tap is removed the wings spring' back or inward to a little less diameter than the di ameter of the thread of the bolt, by which construction the wings a a tightly pinch and hold the bolt when turned on the same. 6o

- (indicated by the dotted lines in Fig. 2,) thus adding still further to the `spring action. This combined spring clamping action permits the nut to be applied and removed as often as desired without impairing its eiiiciency.

In constructing this nut I may form it in va rious other ways. Thus, for instance, the wings may stand at right angles, as in Fig. 4:, and the thread be cut with a straight tap, 8o which in cutting the threadthrows the wings still farther out or beyond the normal, so that when the tap is removed the wings ren turn to the normal position, which leaves the distance between the wings sufficiently less than the diameter of the bolt to permit a clamping action; or the nut-lock may be punched and bent, as in Fig. 4, and be threaded with a tapering threadcutter largest at the bottom; or the thread may be cut 9o by a regular die and the twowings subsequently bent in, as in Fig. 5; or the thread may be cut by a regular die and the bars ZJ Z9 curved so as to throw the wings together, as in Fig. 6; or the base of the plate may be 9 5 curved, as in Fig 6, and the thread cut after` ward by either a straight or a tapering die. I may also punch the boltdiole in diiterent shapes, as shown in Figs. 7 and 8.

Having thus described my invention, what roe I claim as new isl l. A nut-lock consisting of a plate having a bolt-hole provided with oppositelyethreaded sections,`with the metal cut away between these sections, and having upturned Wings lying tangential to the bolt-hole, and also threaded upon their sides, substantially as shown and described.

2. A nut-lock consisting of a plate having a bolt-hole provided with oppositely-threaded sections, with the metal out away between these sections, and having npturned Wings lying tangential tothe bolt-hole, the inner sides of said Wings being threaded and the base or 1o bars b of the plate being curved to cant the Wings toward each other, substantially as shown and described.

AARON C. VAUGHAN. Witnesses:

OHAS. A. PETTIT, SOLON O. KEMON. 

